我在数组(Add a new element to an array without specifying the index in Bash)上添加了元素,但是得到了意外的结果。我想我在数组中添加元素和/或迭代数组以打印其值时做错了事。
代码:
for name in $(cat list.txt); do
host $name.$DOMAIN | grep "has address" | cut -d" " -f4
done
for name in $(cat list.txt); do
echo "."
IPS+=(`host $name.$DOMAIN | grep "has address" | cut -d" " -f4`)
echo ${#IPS[@]}
done
for ip in $IPS; do
echo "IP: $ip"
done
输出:
12.210.145.45
67.20.71.219
75.58.197.10
31.70.88.22
.
1
.
3
.
4
.
4
.
4
IP: 12.210.145.45
预期输出:
输出:
12.210.145.45
67.20.71.219
75.58.197.10
31.70.88.22
.
1
.
2
.
3
.
4
IP: 12.210.145.45
IP: 67.20.71.219
IP: 75.58.197.10
IP: 31.70.88.22
答案 0 :(得分:1)
要遍历数组,请使用
for ip in "${IPS[@]}" ; do
请参阅man bash
中的参数。